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In lithium-ion batteries commonly used in electric vehicles, incombustible additives are added to the electrolyte in preparation for the possibility of ignition. ETRI researchers succeeded in developing a fluorosulfate-based flame retardant additive for the first time in the world.
ETRI announced the development of a fluorosulfate-based flame retardant additive with greatly improved flame retardant properties, electrochemical stability, and cell performance when compared to triphenyl phosphate (TPP), a phosphorous flame retardant commonly known as a traditional flame retardant (not yet commercialized).